A Note on Roman Domination of Digraphs
A vertex subset S of a digraph D is called a dominating set of D if every vertex not in S is adjacent from at least one vertex in S. The domination number of a digraph D, denoted by γ(D), is the minimum cardinality of a dominating set of D. A Roman dominating function (RDF) on a digraph D is a funct...
Main Authors: | Chen Xiaodan, Hao Guoliang, Xie Zhihong |
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Format: | Article |
Language: | English |
Published: |
Sciendo
2019-02-01
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Series: | Discussiones Mathematicae Graph Theory |
Subjects: | |
Online Access: | https://doi.org/10.7151/dmgt.2067 |
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